First attempt at Emulator/HTPC build....

The main purpose for this build is to run emulators up to MAME/Visual Pinball/PS1, play Blu-ray movies at 1080p, and other general computing. This will be my first HTPC build aside from usual Desktop builds.

usually the reason to go with that case is for gaming htpc,and if you're running integrated graphics then it's a waste. You can easily build something smaller,like in a Silverstone ML05
PSU is beyond overkill, haswell i3's are scary power efficient,55w or so max. Even with a 300w gpu you'd still be under 400w and 1080p video isn't exactly Prime95.
Actually, you could build a really small xboxish size htpc with those specs,consider it.

I find more often than not,people don't get round to adding stuff after finishing a build and it works as needed.
You could look into grabing an R7 250 single slot for some low power gaming action. If it's anything like 7750 it'll fit in anything with an expansion slot

How about using a Silverstone ML03B case? It is bigger than the ML05B, but the ML05B is mini ITX and uses an SFX PSU, can only hold 2.5" drives and can only use a slot load slim optical drive. The ML03B can hold a number of 3.5" drives, plus uses normal desktop optical drives and normal ATX PSUs in a mATX form factor. You can add up to a Radeon 7750 or GeForce GTX 650 low profile graphics cards.

ML03B
105 mm (H)
440 mm (W)
350 mm (D)
16.2 liters

ML05B
99 mm (H)
350mm (W)
204 mm (D)
7 liters

BTW looks like there is now an ML04B which looks the same as the ML03B, with a different face.